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COVER PAGE - USD ($)
 12 Months Ended
Mar. 31, 2025
May 08, 2025
Sep. 30, 2024
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Mar. 31, 2025    
Current Fiscal Year End Date --03-31    
Document Transition Report false    
Entity File Number 0-29174    
Entity Registrant Name LOGITECH INTERNATIONAL S.A.    
Entity Incorporation, State or Country Code V8    
Entity Address, Address Line One 1015 Lausanne    
Entity Address, Country CH    
Entity Address, Address Line Two c/o Logitech Inc.    
Entity Address, Address Line Three 3930 North First Street    
Entity Address, City or Town San Jose    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 95134    
City Area Code 510    
Local Phone Number 795-8500    
Title of 12(b) Security Registered Shares    
Trading Symbol LOGI    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 13,509,040,186
Entity Common Stock, Shares Outstanding   147,920,729  
Documents Incorporated by Reference Portions of the registrant's Proxy Statement for the 2025 Annual Meeting of Shareholders are incorporated herein by reference in Part III of this Annual Report on Form 10-K to the extent stated herein.    
Entity Central Index Key 0001032975    
Amendment Flag false    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY